// SPDX-License-Identifier: BSD-3-Clause /* * Reference to the ARM TF Project, * plat/arm/common/arm_bl2_setup.c * Portions copyright (c) 2013-2016, ARM Limited and Contributors. All rights * reserved. * Copyright (C) 2016 Rockchip Electronic Co.,Ltd * Written by Kever Yang * Copyright (C) 2017 Theobroma Systems Design und Consulting GmbH */ #include #include #include #include #include #include #include /* Holds all the structures we need for bl31 parameter passing */ struct bl2_to_bl31_params_mem { struct bl31_params bl31_params; struct atf_image_info bl31_image_info; struct atf_image_info bl32_image_info; struct atf_image_info bl33_image_info; struct entry_point_info bl33_ep_info; struct entry_point_info bl32_ep_info; struct entry_point_info bl31_ep_info; }; struct bl2_to_bl31_params_mem_v2 { struct bl_params bl_params; struct bl_params_node bl31_params_node; struct bl_params_node bl32_params_node; struct bl_params_node bl33_params_node; struct atf_image_info bl31_image_info; struct atf_image_info bl32_image_info; struct atf_image_info bl33_image_info; struct entry_point_info bl33_ep_info; struct entry_point_info bl32_ep_info; struct entry_point_info bl31_ep_info; }; struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry, uintptr_t bl33_entry, uintptr_t fdt_addr) { static struct bl2_to_bl31_params_mem bl31_params_mem; struct bl31_params *bl2_to_bl31_params; struct entry_point_info *bl32_ep_info; struct entry_point_info *bl33_ep_info; /* * Initialise the memory for all the arguments that needs to * be passed to BL31 */ memset(&bl31_params_mem, 0, sizeof(struct bl2_to_bl31_params_mem)); /* Assign memory for TF related information */ bl2_to_bl31_params = &bl31_params_mem.bl31_params; SET_PARAM_HEAD(bl2_to_bl31_params, ATF_PARAM_BL31, ATF_VERSION_1, 0); /* Fill BL31 related information */ bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info; SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0); /* Fill BL32 related information */ bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info; bl32_ep_info = &bl31_params_mem.bl32_ep_info; SET_PARAM_HEAD(bl32_ep_info, ATF_PARAM_EP, ATF_VERSION_1, ATF_EP_SECURE); /* secure payload is optional, so set pc to 0 if absent */ bl32_ep_info->args.arg3 = fdt_addr; bl32_ep_info->pc = bl32_entry ? bl32_entry : 0; bl32_ep_info->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX, DISABLE_ALL_EXECPTIONS); bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info; SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0); /* Fill BL33 related information */ bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info; bl33_ep_info = &bl31_params_mem.bl33_ep_info; SET_PARAM_HEAD(bl33_ep_info, ATF_PARAM_EP, ATF_VERSION_1, ATF_EP_NON_SECURE); /* BL33 expects to receive the primary CPU MPID (through x0) */ bl33_ep_info->args.arg0 = 0xffff & read_mpidr(); bl33_ep_info->pc = bl33_entry; bl33_ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX, DISABLE_ALL_EXECPTIONS); bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info; SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0); return bl2_to_bl31_params; } __weak struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry, uintptr_t bl33_entry, uintptr_t fdt_addr) { return bl2_plat_get_bl31_params_default(bl32_entry, bl33_entry, fdt_addr); } struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry, uintptr_t bl33_entry, uintptr_t fdt_addr) { static struct bl2_to_bl31_params_mem_v2 bl31_params_mem; struct bl_params *bl_params; struct bl_params_node *bl_params_node; /* * Initialise the memory for all the arguments that needs to * be passed to BL31 */ memset(&bl31_params_mem, 0, sizeof(bl31_params_mem)); /* Assign memory for TF related information */ bl_params = &bl31_params_mem.bl_params; SET_PARAM_HEAD(bl_params, ATF_PARAM_BL_PARAMS, ATF_VERSION_2, 0); bl_params->head = &bl31_params_mem.bl31_params_node; /* Fill BL31 related information */ bl_params_node = &bl31_params_mem.bl31_params_node; bl_params_node->image_id = ATF_BL31_IMAGE_ID; bl_params_node->image_info = &bl31_params_mem.bl31_image_info; bl_params_node->ep_info = &bl31_params_mem.bl31_ep_info; bl_params_node->next_params_info = &bl31_params_mem.bl32_params_node; SET_PARAM_HEAD(bl_params_node->image_info, ATF_PARAM_IMAGE_BINARY, ATF_VERSION_2, 0); /* Fill BL32 related information */ bl_params_node = &bl31_params_mem.bl32_params_node; bl_params_node->image_id = ATF_BL32_IMAGE_ID; bl_params_node->image_info = &bl31_params_mem.bl32_image_info; bl_params_node->ep_info = &bl31_params_mem.bl32_ep_info; bl_params_node->next_params_info = &bl31_params_mem.bl33_params_node; SET_PARAM_HEAD(bl_params_node->ep_info, ATF_PARAM_EP, ATF_VERSION_2, ATF_EP_SECURE); /* secure payload is optional, so set pc to 0 if absent */ bl_params_node->ep_info->args.arg3 = fdt_addr; bl_params_node->ep_info->pc = bl32_entry ? bl32_entry : 0; bl_params_node->ep_info->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX, DISABLE_ALL_EXECPTIONS); SET_PARAM_HEAD(bl_params_node->image_info, ATF_PARAM_IMAGE_BINARY, ATF_VERSION_2, 0); /* Fill BL33 related information */ bl_params_node = &bl31_params_mem.bl33_params_node; bl_params_node->image_id = ATF_BL33_IMAGE_ID; bl_params_node->image_info = &bl31_params_mem.bl33_image_info; bl_params_node->ep_info = &bl31_params_mem.bl33_ep_info; bl_params_node->next_params_info = NULL; SET_PARAM_HEAD(bl_params_node->ep_info, ATF_PARAM_EP, ATF_VERSION_2, ATF_EP_NON_SECURE); /* BL33 expects to receive the primary CPU MPID (through x0) */ bl_params_node->ep_info->args.arg0 = 0xffff & read_mpidr(); bl_params_node->ep_info->pc = bl33_entry; bl_params_node->ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX, DISABLE_ALL_EXECPTIONS); SET_PARAM_HEAD(bl_params_node->image_info, ATF_PARAM_IMAGE_BINARY, ATF_VERSION_2, 0); return bl_params; } __weak struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry, uintptr_t bl33_entry, uintptr_t fdt_addr) { return bl2_plat_get_bl31_params_v2_default(bl32_entry, bl33_entry, fdt_addr); } static inline void raw_write_daif(unsigned int daif) { __asm__ __volatile__("msr DAIF, %x0\n\t" : : "r" (daif) : "memory"); } typedef void __noreturn (*atf_entry_t)(struct bl31_params *params, void *plat_params); static void __noreturn bl31_entry(uintptr_t bl31_entry, uintptr_t bl32_entry, uintptr_t bl33_entry, uintptr_t fdt_addr) { atf_entry_t atf_entry = (atf_entry_t)bl31_entry; void *bl31_params; if (CONFIG_IS_ENABLED(ATF_LOAD_IMAGE_V2)) bl31_params = bl2_plat_get_bl31_params_v2(bl32_entry, bl33_entry, fdt_addr); else bl31_params = bl2_plat_get_bl31_params(bl32_entry, bl33_entry, fdt_addr); raw_write_daif(SPSR_EXCEPTION_MASK); if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) dcache_disable(); atf_entry(bl31_params, (void *)fdt_addr); } static int spl_fit_images_find(void *blob, int os) { int parent, node, ndepth = 0; const void *data; if (!blob) return -FDT_ERR_BADMAGIC; parent = fdt_path_offset(blob, "/fit-images"); if (parent < 0) return -FDT_ERR_NOTFOUND; for (node = fdt_next_node(blob, parent, &ndepth); (node >= 0) && (ndepth > 0); node = fdt_next_node(blob, node, &ndepth)) { if (ndepth != 1) continue; data = fdt_getprop(blob, node, FIT_OS_PROP, NULL); if (!data) continue; if (genimg_get_os_id(data) == os) return node; }; return -FDT_ERR_NOTFOUND; } uintptr_t spl_fit_images_get_entry(void *blob, int node) { ulong val; int ret; ret = fit_image_get_entry(blob, node, &val); if (ret) ret = fit_image_get_load(blob, node, &val); debug("%s: entry point 0x%lx\n", __func__, val); return val; } void __noreturn spl_invoke_atf(struct spl_image_info *spl_image) { uintptr_t bl32_entry = 0; uintptr_t bl33_entry = CONFIG_TEXT_BASE; void *blob = spl_image->fdt_addr; uintptr_t platform_param = (uintptr_t)blob; int node; /* * Find the OP-TEE binary (in /fit-images) load address or * entry point (if different) and pass it as the BL3-2 entry * point, this is optional. */ node = spl_fit_images_find(blob, IH_OS_TEE); if (node >= 0) bl32_entry = spl_fit_images_get_entry(blob, node); /* * Find the U-Boot binary (in /fit-images) load addreess or * entry point (if different) and pass it as the BL3-3 entry * point. * This will need to be extended to support Falcon mode. */ node = spl_fit_images_find(blob, IH_OS_U_BOOT); if (node >= 0) bl33_entry = spl_fit_images_get_entry(blob, node); /* * If ATF_NO_PLATFORM_PARAM is set, we override the platform * parameter and always pass 0. This is a workaround for * older ATF versions that have insufficiently robust (or * overzealous) argument validation. */ if (CONFIG_IS_ENABLED(ATF_NO_PLATFORM_PARAM)) platform_param = 0; /* * We don't provide a BL3-2 entry yet, but this will be possible * using similar logic. */ bl31_entry(spl_image->entry_point, bl32_entry, bl33_entry, platform_param); }